ArcCheck.pm revision 1.14
1# ex:ts=8 sw=4: 2# $OpenBSD: ArcCheck.pm,v 1.14 2009/11/11 12:59:34 espie Exp $ 3# 4# Copyright (c) 2005-2006 Marc Espie <espie@openbsd.org> 5# 6# Permission to use, copy, modify, and distribute this software for any 7# purpose with or without fee is hereby granted, provided that the above 8# copyright notice and this permission notice appear in all copies. 9# 10# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 18# Supplementary code to handle archives in the package context. 19# Contrarily to GNU-tar, we do not change the archive format, but by 20# convention, the names LongName\d+ and LongLink\d correspond to names 21# too long to fit. The actual names reside in the PLIST, but the archive 22# is still a valid archive. 23 24use strict; 25use warnings; 26 27use OpenBSD::Ustar; 28 29package OpenBSD::Ustar::Object; 30 31# match archive header name against PackingElement item 32sub check_name 33{ 34 my ($self, $item) = @_; 35 return 1 if $self->name eq $item->name; 36 if ($self->name =~ m/^LongName\d+$/o) { 37 $self->set_name($item->name); 38 return 1; 39 } 40 return 0; 41} 42 43# match archive header link name against actual link names 44sub check_linkname 45{ 46 my ($self, $linkname) = @_; 47 my $c = $self->{linkname}; 48 if ($self->isHardLink && defined $self->{cwd}) { 49 $c = $self->{cwd}.'/'.$c; 50 } 51 return 1 if $c eq $linkname; 52 if ($self->{linkname} =~ m/^Long(?:Link|Name)\d+$/o) { 53 $self->{linkname} = $linkname; 54 if ($self->isHardLink && defined $self->{cwd}) { 55 $self->{linkname} =~ s|^$self->{cwd}/||; 56 } 57 return 1; 58 } 59 return 0; 60} 61 62use POSIX; 63 64sub verify_modes 65{ 66 my ($o, $item) = @_; 67 my $result = 1; 68 69 if (!defined $item->{owner} && !$o->isSymLink) { 70 if ($o->{uname} ne 'root' && $o->{uname} ne 'bin') { 71 print STDERR "Error: no \@owner for ", 72 $item->fullname, " (", $o->{uname}, ")\n"; 73 $result = 0; 74 } 75 } 76 if (!defined $item->{group} && !$o->isSymLink) { 77 if ($o->{gname} ne 'bin' && $o->{gname} ne 'wheel') { 78 if (($o->{mode} & (S_ISUID | S_ISGID | S_IWGRP)) != 0) { 79 print STDERR "Error: no \@group for ", 80 $item->fullname, " (", $o->{uname}, 81 "), which has mode ", 82 sprintf("%4o", $o->{mode} & (S_IRWXU | S_IRWXG | S_IRWXO | S_ISUID | S_ISGID)), "\n"; 83 $result = 0; 84 } else { 85 print STDERR "Warning: no \@group for ", 86 $item->fullname, " (", $o->{gname}, ")\n"; 87 } 88 } 89 } 90 if (!defined $item->{mode} && $o->isFile) { 91 if (($o->{mode} & (S_ISUID | S_ISGID | S_IWOTH)) != 0) { 92 print STDERR "Error: weird mode for ", 93 $item->fullname, ": ", 94 sprintf("%4o", $o->{mode} & (S_IRWXU | S_IRWXG | S_IRWXO | S_ISUID | S_ISGID)), "\n"; 95 $result = 0; 96 } 97 } 98 return $result; 99} 100 101# copy long items, avoiding duplicate long names. 102sub copy_long 103{ 104 my ($self, $wrarc) = @_; 105 if ($self->name =~ m/^LongName(\d+)$/o) { 106 $wrarc->{name_index} = $1 + 1; 107 } 108 if (length($self->name) > 109 OpenBSD::Ustar::MAXFILENAME + OpenBSD::Ustar::MAXPREFIX + 1) { 110 $wrarc->{name_index} = 0 if !defined $wrarc->{name_index}; 111 $self->set_name('LongName'.$wrarc->{name_index}++); 112 } 113 $self->copy($wrarc); 114} 115 116package OpenBSD::Ustar; 117 118# prepare item and introduce long names where needed. 119sub prepare_long 120{ 121 my ($self, $item) = @_; 122 my $filename = $item->name; 123 my $entry = $self->prepare($filename); 124 if (!defined $entry->{uname}) { 125 die "No user name for ", $entry->name, " (uid ", $entry->{uid}, ")"; 126 } 127 if (!defined $entry->{gname}) { 128 die "No group name for ", $entry->name, " (gid ", $entry->{gid}. ")"; 129 } 130 my ($prefix, $name) = split_name($entry->name); 131 if (length($name) > MAXFILENAME || length($prefix) > MAXPREFIX) { 132 $self->{name_index} = 0 if !defined $self->{name_index}; 133 $entry->set_name('LongName'.$self->{name_index}++); 134 } 135 if ((defined $entry->{linkname}) && 136 length($entry->{linkname}) > MAXLINKNAME) { 137 $self->{linkname_index} = 0 if !defined $self->{linkname_index}; 138 $entry->{linkname} = 'LongLink'.$self->{linkname_index}++; 139 } 140 return $entry; 141} 142 1431; 144